The 21.5-Inch Business Class Seat That Threatens Collins, Safran & RECARO’s Grip On Mid-Size Airlines

UK-based seat manufacturer Unum Aircraft Seating has unveiled its new cabin-ready product, Unum Two, at Aircraft Interiors Expo (AIX) 2026. It concludes a three-year development program that has finalized industrial design, engineering and certification testing. The seat is 21.5 inches (54.6 cm) wide, forward-facing, and features a privacy door and direct aisle access. Unum Two also uses the company’s patented Scimitar mechanism, giving passengers comfortable zero-gravity positioning.